In the figure, AD=BC and AD||BC. Prove that AB=DC
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In ∆ADC & ACB
AD=CB ...given
angle ADC = angle ACB (alt. interior angle)
AC= AC (common)
∆ ADC & ∆ ACB are congruent
SAS Congruency rule
DC = AB ( BY CPCT )
AD=CB ...given
angle ADC = angle ACB (alt. interior angle)
AC= AC (common)
∆ ADC & ∆ ACB are congruent
SAS Congruency rule
DC = AB ( BY CPCT )
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